Introduction

The 1999-2004 Jeep Grand Cherokee has a common failure where the blower fan wire adapter overheats and melts. Use this guide to fix and repair this connector and get your AC and Heater working again!

Image 1/3: The blower motor is located under the dash on the passenger side of the vehicle. Push the seat back, and place your tools on the floor of the car. Image 2/3: The blower motor is located under the dash on the passenger side of the vehicle. Push the seat back, and place your tools on the floor of the car. Image 3/3: The blower motor is located under the dash on the passenger side of the vehicle. Push the seat back, and place your tools on the floor of the car.
  • Place the car in park, activate the parking break, and leave the car running.

  • The blower motor is located under the dash on the passenger side of the vehicle. Push the seat back, and place your tools on the floor of the car.

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Image 1/2: The blower motor adapter is a bundle of three wires located on the left side. Image 2/2: While the car is on push and pull gently on the wire connection.
  • There are a few wires hanging below the passenger side dash.

  • The blower motor adapter is a bundle of three wires located on the left side.

  • While the car is on push and pull gently on the wire connection.

  • If the fan turns on you have identified the problem and we will fix it.

    • If the fan does not turn on the damage may not be fixable without purchasing new parts.

  • Do not grasp any wires you can not see. Do not grasp any wires that are not covered in insulation and or electrical tape.

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Image 1/3: There are two screws holding the adapter in place. Using a philips screw driver, remove both screws and the adapter will come down. Image 2/3: The two screws are identical. Be careful not to lose them. Image 3/3: Be sure the car is completely off before unscrewing anything.
  • Turn off the car.

  • There are two screws holding the adapter in place. Using a philips screw driver, remove both screws and the adapter will come down.

  • The two screws are identical. Be careful not to lose them.

  • Be sure the car is completely off before unscrewing anything.

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Image 1/2: Observe the damage and decide if electrical tape will be enough to hold the wires in place. Image 2/2: Replacement parts are available for purchase if the damage is beyond repair.
  • The connection between the three wires and the adapter box is the location of the common melting default.

  • Observe the damage and decide if electrical tape will be enough to hold the wires in place.

  • Replacement parts are available for purchase if the damage is beyond repair.

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Image 1/1:
  • Using electrical tape wrap the wires tightly until there are securely in place.

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Image 1/3: Turn on the car and test the AC/Heater Image 2/3: Turn on the car and test the AC/Heater Image 3/3: Turn on the car and test the AC/Heater
  • Screw the adapter back into place.

  • Turn on the car and test the AC/Heater

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Conclusion

Enjoy your working AC and Heater!

One other person completed this guide.

William Schaller

Member since: 02/24/2015

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Cal Poly, Team 24-1, Green Winter 2015 Member of Cal Poly, Team 24-1, Green Winter 2015

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